WASTE MANAGEMENT QUIZ 19

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Question 1:

In which of the following processes hazardous wastes are destroyed by changing their oxidation state?

Filtration

Evaporation

Sedimentation

Chemical oxidation and reduction

Coagulation aided sedimentation

Decrease the efficiency of sedimentation

Increase the efficiency of sedimentation

Efficiency of sedimentation remains same

First increase and then decrease the efficiency of sedimentation

The optimum dosage of coagulant is determined by the

Jar test method

Cup test method

Beaker test method

Testtube test method

Construction and demolished waste does not include

1,2

1,4

2,4

1,3

The general activated sludge process control method is to monitor SVI , MCRT and the major nutrients etc. Here SVI stands for

Sludge volume impurities

Sludge volume index

Simple volume index

Solid volume index